Pos wallet is a good online wallet,you cn also use an exchange wallet but it is highly recomended that you run a desktop wallet to keep majority of your coin,so you can have a back up of your coin in case any incident happen,do not put all your eggs in one basket too.
Those who refuse to heed the warning are going to get burned. I posted warnings a couple times in the past about how they scam users (and multiple others have come forward with the same situations). If you trust PoSWallet, you're going to lose everything.
This I highly doubt, because I've been with PoSWallet since day 1, I know they have been going through some growing pains : such as-- during the times when there was only one support member on the team (this is probably why you and others claimed you've been burned). I never had one incident with PoSWallet. I understood they were going to have tech difficulties from the beginning ( most were the actual wallet issues that the actual coin devs were the only to take action) if you ever ran more than one wallet on your machine , you would know this.
What you just stated is the same story as Mt. Gox. Same as Cryptsy. Same as (insert multiple other sites here). People argued that "because I wasn't affected, obviously nothing happened." Then they cry when they lose everything. All I can do is toss up a warning -- the rest is on each individual. Just sad to keep warning people about these things, then they lose everything and cry. In my case, I only had ~0.2 BTC stolen, but there are some that are risking far more than that.
This is not Mr. Gox, or Cryptsy, nor the same devs/owners, so in my eyes bad comparison , Oh, most people keep their "value" on exchanges.